Flexion

Written by Dr Sheila Strover on March 14, 2025

Flexion means 'bending'. Page updated September 2023 by Dr Sheila Strover (Clinical Editor)

Flexion range of motion

A straight leg is said to be at zero (0) degrees of flexion. A fully flexed knee may reach about 140 degrees of flexion, depending on the muscle/fat bulk of the limb.

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